Detergents and cleaning agents having improved performance using hydroxy-5-quinoline sulfonic acid

Abstract

The present invention relates to the use of 8-hydroxyquinoline sulfonic acids in detergents and cleaning agents for improving the washing or cleaning performance with respect to bleachable stains.

What is claimed is: 
     
       1. A method for improving washing or cleaning performance with respect to bleachable stains comprising the steps: (a) providing a detergent or cleaning composition comprising at least one surfactant and 8-hydroxy-5-quinoline sulfonic acid in an amount from 0.05 wt. % to 5 wt. %, by the weight of the total detergent or cleaning composition, and (b) bringing a textile having bleachable stains into contact with the detergent or cleaning agent;
 wherein the composition contains builders but does not include an oxidative bleach agent; and 
 wherein the composition is free of perfumes apart from the 8-hydroxy-5-quinoline sulfonic acid. 
 
     
     
       2. The method according to  claim 1 , wherein the stains comprise polymerizable substances. 
     
     
       3. The method according to  claim 2 , wherein the polymerizable substances are polyphenolic dyes. 
     
     
       4. The method according to  claim 2 , wherein the polymerizable substances are flavonoids. 
     
     
       5. The method according to  claim 2 , wherein the polymerizable substances are dyes in the class of anthocyanidins or anthocyanins, or oligomers thereof. 
     
     
       6. The method according to  claim 1 , wherein the improved detergent or cleaning agent performance includes an improved removal of green-, yellow-, red-, blue-, violet-, lilac-, brown-, purple-, or pink-colored stains. 
     
     
       7. The method according to  claim 1 , wherein the stains are selected from stains caused by cherry, morello cherry, grape, apple, pomegranate, chokeberry, plum, buckthorn, acai, kiwi, mango, grass, redcurrants, blackcurrants, elderberries, blackberries, raspberries, blueberries, cranberries, lingonberries, strawberries, huckleberries, coffee, tea, red cabbage, blood orange, eggplant, tomato, carrot, beetroot, spinach, peppers, red fleshed or blue-fleshed potatoes, red onion, spices, sauces, chutneys, curries, purees, marmalades, wines, and/or juices. 
     
     
       8. A laundry detergent or cleaning composition comprising at least one surfactant and 8-hydroxy-5-quinoline sulfonic acid in an amount from 0.05 wt. % to 5 wt. %, by the weight of the total detergent or cleaning composition,
 wherein the composition contains builders but does not include an oxidative bleach agent; and 
 wherein the composition is free of perfumes apart from the 8-hydroxy-5-quinoline sulfonic acid. 
 
     
     
       9. The composition according to  claim 8 , wherein the oxidative bleach agent is selected from the group consisting of hypochlorites, hydrogen peroxide, hydrogen peroxide-supplying substances, and peroxoacids. 
     
     
       10. The composition according to  claim 8 , further comprising constituents of textile detergents selected from the group of builders, surfactants, and a mixture thereof. 
     
     
       11. The method according to  claim 1  wherein the 8-hydroxy-5-quinoline sulfonic acid is present in the composition in an amount of about 0.4 wt. % by the weight of the total detergent or cleaning composition. 
     
     
       12. The composition according to  claim 8  wherein the 8-hydroxy-5-quinoline sulfonic acid is present in an amount of about 0.4 wt. % by the weight of the total detergent or cleaning composition. 
     
     
       13. The method according to  claim 1 , wherein the oxidative bleach agent is selected from the group consisting of hypochlorites, hydrogen peroxide, hydrogen peroxide-supplying substances, and peroxoacids. 
     
     
       14. The method according to  claim 1 , where the composition further comprises constituents of textile detergents selected from the group of builders, surfactants, and a mixture thereof.